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Buying a SIM Card in Thailand

In Get Connected by Dave Dean29 Comments

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Like the rest of South East Asia, Thailand offers a lot to travellers. Beautiful beaches and landscapes, great weather, fantastic food and inexpensive prices make it an appealing destination, and many millions of visitors flock to the country every year.

For those looking to stay connected while they’re there, the good news is that buying a local SIM card is a straightforward and inexpensive process, with decent data speeds and good coverage almost everywhere.

Here’s what you need to know.


  • We recommend AIS for most travellers

There are three cell networks in Thailand, operated by dtac, AIS and TrueMove. While you can also buy SIM cards and service from resellers, there’s little point in doing so for most short-term visitors to the country.

AIS has the largest market share, and also has a large network of Wi-fi hotspots that you can access as part of the more expensive packages. It seems like you’re rarely far from one of these hotspots, which don’t count towards your mobile data allowance.

The company sells prepaid service under the 1-2-Call and you! Mobile brands. Although the latter provides more flexibility, most travellers will find themselves using 1-2-Call SIMs as they’re more widely available.

I’ve used dtac’s Happy prepaid service in the past, but now tend to stick with AIS due to those Wi-fi hotspots. 3G is available on the 900 and 2100Mhz bands, while 4G/LTE is provided on 1800 and 2100Mhz (LTE bands 1 and 3.) AIS has LTE service in 80%+ of the country, including all major cities and towns.


Like many other things in Thailand, buying a SIM card is simple. If you fly into Bangkok’s main Suvarnabhumi airport, all three cell companies have booths beside each other in the arrival hall. They all offer pretty much the same tourist-focused packages, which are aimed mainly at those spending a week or less in the country.

There’s a similar setup at Bangkok’s other airport, Don Mueang, and it’s possible to buy SIMs at both Chiang Mai and Phuket airports as well. If you’re in a hurry and not in the country for long, feel free to pick up one of these tourist packages — but for better deals, seek out one of the company’s retail shops outside the airport.

Thailand bought in stricter registration requirements for buying SIMs in late 2017, which means the day of just handing over cash at the corner store are gone, at least in theory. At both airport stalls and retail stores, foreigners now need to provide their passport and have their photo taken when buying a local SIM.

I experienced this first hand at an AIS store in a shopping mall in Bangkok, where the staff member took a copy of my passport and snapped a photo of me on a tablet as part of the purchase process. I’m really not a fan of onerous identification requirements like these, but unless you’re buying from a street vendor and are happy with a used SIM that could be shut off at any time, you’re pretty much stuck with it.

On the upside, at least the rest of the process was relatively painless. I took a number for an English-speaking sales rep, picked a call/text/data package from a printed brochure at the counter, and handed over the money. The rep did the rest, including activating the SIM, loading my credit onto it, and selecting the right package. It took about ten minutes in total, and the SIM worked immediately.


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If you buy one of the AIS tourist packages at the airport, you’ll pay 299 baht ($10) for a card with 1.5GB of data valid for a week, plus 100 baht call credit valid for a month. There’s also a 599 baht package that gives 6GB of data valid for two weeks, plus that same 100 baht call credit.

Both are poor value compared to purchasing outside the airport, but if you’re in a hurry and happy to pay for convenience, it’s an option. 

If you buy your SIM card from a retail store, you’ll have access to the full range of packages. They are many and varied, with validity ranging from a day to a month.

AIS packages

I bought two different packages from the AIS store in Bangkok, one for my partner, one for me. For 427 baht including tax (~$14 USD), I received 3GB of LTE data valid for a month, plus access to the high-speed AIS SUPER WI-FI network. I also added a few extra baht to cover the occasional call and text.

For 321 baht including tax, the other package had unlimited data throttled to 1Mbps speed, valid for a month. It’s a good alternative for people who just need slow-but-usable data for a few weeks.

Topping Up

You can buy top-ups pretty much anywhere in Thailand, including many convenience stores, AIS retail locations, and several other places. Just keep an eye out for the AIS / 1-2-Call logo. It’s also possible to top up online with a credit/debit card on the AIS website.

No matter how you top up, you may then need to purchase or renew the actual package you want to use. Be sure to do this, as the default call, text, and data rates aren’t particularly cheap.

Calling *777# from your phone should give an interactive menu for choosing your package — take a look on the AIS site for more details. To switch your AIS SIM from Thai to English, enter *700*9*7*2# and wait a minute or two for the confirmation text.


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Coverage and Data Speeds

AIS coverage is good almost anywhere you’re likely to go as a tourist, and much of the rest of the country as well.

I’ve had full signal most of the time in Bangkok, Chiang Mai, Phuket and other provincial capitals, as well as on bus and scooter trips in the countryside and on several islands. I even had signal for a while after crossing the border into Cambodia, at least until I got outside the range of the last Thai cell tower.

Data speeds are reasonable, but definitely vary depending on where you are, and how busy the cell tower is that you’re using. I had much faster LTE speeds in Chiang Mai than Bangkok, for instance.

It’s also worth mentioning the exceptional speed of the AIS SUPER WI-FI network. I regularly saw over 150Mbps download speeds when connected to it, and since it doesn’t count towards your cellular data allowance, it’s well worth using this network if your SIM package includes access to it.

AIS LTE speeds in central Bangkok

AIS LTE speeds in central Bangkok

AIS LTE speeds in central Chiang Mai

AIS LTE speeds in central Chiang Mai

Check out our guides to buying SIM cards in many other countries here.

Like the rest of South East Asia, Thailand offers a lot to travelers -- including inexpensive ways of staying connected. Here's how to buy a local SIM card.

About the Author

Dave Dean

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Founder and editor of Too Many Adapters, Dave has been a traveler for 20 years, and a geek for even longer. When he's not playing with the latest tech toy or working out how to keep his phone charged for just a few more minutes, he can probably be found sitting in a broken-down bus in some obscure corner of the planet.


  1. Hi Dave,

    A great guide to buying a SIM in Thailand. It worked exactly as you mentioned and the prices are spot on. On mainland Thailand it’s easy to go to the AIS stores. Check out their offers. Sam got 1 week pass with 1GB of data and BHT50 for calls FREE. If you arrive on some of the islands first like Koh Lipe or Koh Lanta the 7 Elevens seem to run out of the best SIMs quite often, just a heads up. I purchased my SIM in a 7 Eleven on Koh Lanta and had 2GB and BHT50 for calls during our month stay in Thailand which lasted right up to the last day!

  2. Hi Dave,
    I just want to update information. The account identification has been required every store. I heard that it must do due to the government policy. Besides, there’re 4G services in Thailand since the beginning of this year. I and my friend went to Thailand for 2 weeks last month. My iPad is WiFi-only model, but my accommodation has not WiFI. So, I rented mobile router called – ThaiSims. It provided unlimited data (I don’t know how much GB). Then, my iPad can connect internet everywhere, not only in the hotel. It priced 5$/day. I and my friend equally paid. So, it’s just 2.5$/day!

  3. my son is going to Thailand to teach English this Sept for at least 6 months…trying to fig out best plan/ card for him for data/text/voice(he has to call me of course!) I’m really confused

    1. Author

      There’s not a great deal of price difference between the various SIM card options, especially if he’ll be in the country for a few months. Around $10/month will get him 2GB of data and a few local calls and texts, as long as he buys the SIM from a 7-11 or cell company rather than at the airport. If he needs more data each month, there are larger packages available too. As mentioned in the article, I like AIS because it has wide network coverage, and also gives you access to loads of Wi-fi hotspots in the cities.

      For calling you, I’d recommend he uses Skype (or something similar, like Facetime) to save money.

  4. Good morning:

    I currently am living in Bangkok and just wanted to provide an update. I too like AIS, and all the family are using a tourist SIM. There has been a recent change where AIS and 7/11 are no longer affiliated. You can however top up the AIS cards at Family Mart locations, which are also very plentiful around Bangkok. You can also top up via the AIS website and using a credit card, something I do regularly.

    1. Author

      Thanks for the info, Al! I’ve updated the post to reflect this change.

  5. If I understand this correctly, to enable my laptop I need a GMS phone with a AIS sim card to teather to my laptop. Or is there another way?

  6. Hi Dave!
    Thanks for this informative posts!

    Would you please recommend the cheapest package of 1-2 Call for me? I will be staying in the city center so I’m sure I can find Family Mart around the area.

    I’m using a 4G enabled phone with 1800Mhz frequency. I need a fast connection (1.5 GB and up) and not so much on call for 7 days 6 nights in BKK.

    I’m also considering the 7 day tourist sim if there’s not much difference with the price as compared to the 1-2 Call sim in local stores.

    Thanks a lot! God bless.

    1. Author

      Hi Hendel,

      I haven’t been to Thailand for a while, unfortunately, so I don’t have first hand experience of what the current package pricing looks like. That said, the link I gave above (http://www.ais.co.th/package/) should be pretty accurate.

      There will certainly be a difference between the tourist SIM price at the airport and what’s available at local stores elsewhere, but you’re not talking large sums either way for a 7 day stay.

      1. Hi Dave,
        I am in Hua Hin, Thailand and need a SIM card for a long stay (6 months++).
        Are there AIS cell packages available here and what would you suggest as
        a package for staying in touch with my family and clients back in the States without
        going broke? I already use WhatsApp and Line. Sometimes though there are those
        situations when someone needs to call me and use my regular phone number.
        Talking of (phone number) is there any way to get a repetitive number as much
        as possible? I know that there are auctions for such things (phone numbers) —
        can I get at least maybe the last 4 digits or any digits in my new Thai number that are repetitive? I need to know asap as I am purchasing a SIM card this week.
        Thanks for your help — AL

      2. Author

        AIS packages are available in Hua Hin, at the same prices as elsewhere in the country. You just top up each month as usual.

        Regarding calling, and being called by, US numbers, I’d suggest Skype Calling or Google Voice. You can get a US number for free or a few bucks a month, and have it ring on your phone for free, or redirect to your Thai number for a few cents a minute. Similarly, you can call US numbers for free (Google Voice) or a few cents a minute (Skype).

        I’ve no idea about getting repetitive numbers, sorry. You can probably choose from the range of available numbers at the store you buy your SIM from, but they may not have anything particularly memorable.

  7. Been in Bangkok for 5 hrs now and not found the sim I want.

    The airport only sold 7 day sims that were more expensive than quoted on here and the local 7/11s didn’t have stock and the family mart didn’t have the 1-2-c in stock and the 7 day one I decided to get as a last resort they couldn’t register online so they wouldn’t sell it to me!

  8. Last year 7-Eleven fell out with AIS over fees and no longer stock AIS products or offer a top-up service – they are now TrueMove retailers.

    The easiest place to top up your credit is Tesco Lotus who are everywhere – I’ve never tried Family Mart…

    1. Author

      Purely convenience/laziness. 🙂 The AIS kiosk at Bangkok airport will only sell you tourist packages. If you’re happy to wait until you get into the city, you can buy the standard packages. Given the endless lines at that kiosk, apparently many people can’t wait to get connected!

  9. Hi Dave, thanks for the very helpful article! I’m struggling to find info on buying an AIS SIM within Phuket International Airport, are you able to offer any insight? Thanks in advance! – Cindy

    1. Author

      I’ve been through Phuket airport a few times, although not for maybe three years now. There really isn’t much there in the way of useful shops — a few (bad) restaurants, money changers etc. I don’t remember having seen anywhere selling SIM cards — but then again, I wasn’t particularly looking for them there either.

      I guess that’s a long-winded way of saying I don’t really have much insight for you! 🙂

  10. Hello Dave,
    I am going to Thailand in April. I will be traveling to Bangkok and a few other cities for 2 weeks. Which plan do you recomemnd? Most of the words are in Thai on thier website and I can not read it. I have no problem waiting to go to 1 of the stores to buy a sim. Also should I buy the 2 week traveler sim for 599THB or even the 7 day one, until I can get a better deal?

    1. Author

      I’ll be back in Thailand in a couple of weeks, and will update pricing etc soon after — I don’t have new recommendations, but the post will be updated before you travel. 🙂

      Regarding the traveler SIM, I don’t recommend it unless you absolutely need to have a local SIM before you leave the airport, both because of the higher prices, and the lengthy wait to buy one at the kiosks at Bangkok airport.

      1. Thank you Dave!
        I agree and I hope your trip goes well. I will wait to go into town to get one. Like you said, by then you will have price updates before I leave to to there. First I Need to get A phone. lol

  11. Hi Dave, any updates in recommendations and prices, going in a couple of weeks for a month.

    Thanks, Mike

    1. Author

      Hi Mike,

      Prices and recommendations are up to date as of the publication date of the post (two weeks ago).

  12. My husband is in Phuket now. He travelled on March 9 2018 and will be there until March 13, 2018. But he said that last evening he tried to buy sim card in Phuket and it was not sold to foreigner due to government regulation prohibit foreigner to have Thai Sim Card and they have to find local people to buy it and have to register the local people ID as a prove to that. Is that really that difficult and sounds horrible . Thank you.

    1. Author

      I suspect whoever told him that was either trying to scam him, or just wrong. I’m in Thailand currently, and bought a SIM at an official AIS store in Bangkok a few weeks ago with no problem whatsoever.

  13. Thank you so much for your reply. I will remind him about this. Thank you, Sir

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